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Compact grey toggle breaker with bolt-on base

GE

GE THQB1130 Miniature Circuit Breaker 30A 1 Pole 120/240V AC

SKU CH-77T4-Q9B14

A 30 A, single-pole miniature breaker rated 120/240 V AC with a 10 kA interrupting capacity for bolt-on panel mounting

  • Reliable overload protection with 10 kA interrupting rating
  • Fits standard load centers using bolt-on mounting style
  • Handles 30 A at 120/240 V AC single-phase circuits
  • Accepts wire sizes from 14 to 8 MCM for flexible installation
  • Compact 3.5 in length suits tight panel spaces

Purpose-built protection

The GE THQB1130 is a single-pole miniature circuit breaker rated at 30 amps for 120/240V AC systems. It uses a bolt-on mounting style and a toggle actuator to interrupt fault currents up to 10kA. The frame size is 100A/THQ, making it suitable for lighting panels and load centres that accept this form factor.

Suitability check

Electricians and facility managers needing a standard 30A branch-circuit device for GE-compatible load centres will find the correct voltage and interrupting rating here. Installations requiring a two-pole breaker, a DC rating, a plug-on mounting method or a different ampere rating must select another product.

Build integration

The breaker clamps conductors from 14 MCM copper up to 8 MCM, with a minimum of 12 MCM aluminium, using screw-clamp terminals. Its 3.5 in length, 1 in width and 3.3 in depth fit the designated panel space, freeing adjacent slots for other circuits while maintaining the required 10kA AIR rating at the panel's voltage.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 67% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameGE

Questions about this item

What load centre or panelboard is this THQB breaker designed to bolt onto?

It is built for GE lighting panels and load centres that accept the 100 A THQ frame size and a bolt-on mounting style.

Will the 30 A single-pole breaker coordinate with an existing 100 A main breaker in the same panel?

The THQB1130 carries a 10 kA interrupting rating at 120/240 V AC, so it will coordinate with a 100 A main as long as the available fault current does not exceed 10 kA.

How can I confirm the breaker is seated and making proper contact after installation?

The toggle should snap firmly to the ON position, the bolt-on feet must be fully clamped to the bus stab, and a voltage check across the load terminal and neutral should read 120 V when the circuit is energised.

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